:root {
  --bg: #0f1219;
  --surface: #171c27;
  --text: #e8ecf4;
  --muted: #9aa3b5;
  --accent: #6ee7b7;
  --danger: #f87171;
  --border: #2a3142;
  --font: "DM Sans", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 10% -10%, rgba(26, 36, 56, 0.9), var(--bg) 55%);
  color: var(--text);
  line-height: 1.55;
}

a {
  color: var(--accent);
}

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.layout-page {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: flex-start;
  gap: 1.25rem;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 0.75rem;
  box-sizing: border-box;
}

.layout-content {
  flex: 0 1 640px;
  min-width: 0;
  width: 100%;
}

.ad-banner--top,
.ad-banner--bottom {
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
  padding: 0.65rem 1rem;
  text-align: center;
  box-sizing: border-box;
}

.ad-banner--top {
  margin-top: 0.35rem;
}

.ad-banner iframe,
.ad-banner ins,
.ad-sky iframe,
.ad-sky ins {
  max-width: 100%;
  vertical-align: middle;
}

.ad-sky {
  width: 160px;
  flex-shrink: 0;
  display: none;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
  box-sizing: border-box;
  overflow: hidden;
}

@media (min-width: 1060px) {
  .ad-sky {
    display: block;
  }
}

@media (max-width: 1059px) {
  .layout-page {
    flex-direction: column;
    align-items: stretch;
  }
}

.preview-wrap {
  margin-top: 1.25rem;
}

.preview-wrap[hidden] {
  display: none !important;
}

.preview-heading {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.preview-frame {
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg);
  overflow: hidden;
  max-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-frame img {
  display: block;
  max-width: 100%;
  max-height: 280px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.preview-meta {
  margin: 0.5rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
  word-break: break-all;
}

.brand {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

h1 {
  font-size: clamp(1.65rem, 4vw, 2rem);
  font-weight: 600;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.lead {
  color: var(--muted);
  margin: 0 0 2rem;
  font-size: 1.02rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

.drop {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 2rem 1.25rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  background: rgba(255, 255, 255, 0.02);
}

.drop:hover,
.drop.dragover {
  border-color: var(--accent);
  background: rgba(110, 231, 183, 0.06);
}

.drop strong {
  display: block;
  margin-bottom: 0.35rem;
}

.drop span {
  font-size: 0.9rem;
  color: var(--muted);
}

.row {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

label {
  font-size: 0.9rem;
  color: var(--muted);
}

select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

.btn {
  margin-top: 1.25rem;
  width: 100%;
  border: 0;
  border-radius: 10px;
  padding: 0.85rem 1rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  background: linear-gradient(135deg, #34d399, #22d3ee);
  color: #041016;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.note {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.result {
  margin-top: 1.25rem;
  display: none;
}

.result.visible {
  display: block;
}

.result label {
  display: block;
  margin-bottom: 0.35rem;
}

.copy-row {
  display: flex;
  gap: 0.5rem;
}

.copy-row input {
  flex: 1;
  padding: 0.65rem 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
}

.copy-row button {
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  padding: 0 1rem;
  cursor: pointer;
}

.copy-row button:hover {
  border-color: var(--accent);
}

.err {
  margin-top: 1rem;
  color: var(--danger);
  font-size: 0.95rem;
  display: none;
}

.err.visible {
  display: block;
}

.view-card img {
  max-width: 100%;
  border-radius: 10px;
  display: block;
  margin-top: 1rem;
  border: 1px solid var(--border);
}

.warn {
  background: rgba(248, 113, 113, 0.12);
  border: 1px solid rgba(248, 113, 113, 0.35);
  color: #fecaca;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  font-size: 0.92rem;
  margin-bottom: 1rem;
}

.gone h1 {
  margin-bottom: 0.5rem;
}

.gone p {
  color: var(--muted);
  margin: 0;
}

footer {
  margin-top: 3rem;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}